ZipRealty is an online real estate agency. A survivor of the late 1990s dot-com bust, ZipRealty gives users home listings and values across more than a million homes. Home owners can also list their home right on the site, and have ZipRealty help sell it. When sellers do that there's usually a lower commission charge than they'd get from local real estate agencies.
The site also features a price tracking tool to search homes with reduced prices, and a tool that tells you what your home should be worth based on its size, amenities, and the recent values of other homes in your area.